A missionary of such great stature, Andrew Murray (1828-1917) can be mentioned in the same breath as John "Praying" Hyde.
"Few books have had the impact on calling the Church to prayer as Andrew Murray's classic, 'With Christ in the School of Prayer'... I encourage you to saturate yourselves in this timeless classic and learn how you can prepare yourself for effective participation in the highest calling Christ has given the Church--the call to intercessory prayer." (Dick Eastman, Founder & Director Change the World Ministries, sponsoring 'Change the World Schools of Prayer')
Andrew Murray, like "Praying Hyde", discovered the "Secret Place of the Most High", where truly intercessory prayer/communion with the Holy Spirit takes place. God stands ready to give you this power also!